THP 94/42 R 4 XXT
THP 125/42 R 4 XXT
THP 140 H/42 R 4 XXT
GB-07.2005
S
AFETY
INSTRUCTIONS
AND
INFORMATION
C
HAPTER
2
2-10
2.7.3.3
Underground
The ground must be flat, horizontal and without voids.
On sloping ground the outriggers can slip from timber
baulks.
2.7.3.4
Quality of ground
The ground must be of a quality sufficient to ensure the stability of the machine and the distributor boom. The
outriggers exert a surface pressure up to 260 N/cm
2
(26 kg/cm
2
). If the ground quality is insufficient to accept this
the bearing area should be enlarged with two crossed layers of support plates. See DIN 1054 for recommended
values.
Fig. 2.5 Ground
Premissible ground pressure
N/cm
2
(kg/m
2
)
Types of ground
A. Backfilled ground, not artificially consolidated
B. Mature, obviously undisturbed ground:
1. Silt, marsh, topsoil
2. Non-cohesive, sufficiently firm ground:
fine to medium sand
Coarse sand to gravel
3. Cohesive ground:
Mushy
Soft
Stiff
Semi-hard
Hard
4. Rock, unweathered with little fissuring and in a good position
0-10 (0-1)
0
15 (1,5)
20 (2,0)
0
4 (0,4)
10 (1,0)
20 (2,0)
30 (3,0)
150-300 (15-30)
Fig. 2.6 Premissible ground pressures for various types of ground
